[test] Fix catching infra problems in test-runner.

tools/testrunner/local/execution.py

 # Copyright 2012 the V8 project authors. All rights reserved.
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are
 # met:
 #
 #     * Redistributions of source code must retain the above copyright
 #       notice, this list of conditions and the following disclaimer.
 #     * Redistributions in binary form must reproduce the above
 #       copyright notice, this list of conditions and the following
 #       disclaimer in the documentation and/or other materials provided
@@ skipping 119 matching lines @@
     raise NotImplementedError()
 
 
 def SetupProblem(exception, test):
   stderr = ">>> EXCEPTION: %s\n" % exception
   match = re.match(r"^.*No such file or directory: '(.*)'$", str(exception))
   if match:
     # Extra debuging information when files are claimed missing.
     f = match.group(1)
     stderr += ">>> File %s exists? -> %s\n" % (f, os.path.exists(f))
-  return test.id, output.Output(1, False, "", stderr), 0
+  return test.id, output.Output(1, False, "", stderr, None), 0
 
 
 class TestJob(Job):
   def __init__(self, test):
     self.test = test
 
   def _rename_coverage_data(self, output, context):
     """Rename coverage data.
 
     Rename files with PIDs to files with unique test IDs, because the number
     of tests might be higher than pid_max. E.g.:
     d8.1234.sancov -> d8.test.1.sancov, where 1234 was the process' PID
     and 1 is the test ID.
     """
-    if context.sancov_dir:
+    if context.sancov_dir and output.pid is not None:
       sancov_file = os.path.join(
           context.sancov_dir, "%s.%d.sancov" % (self.test.shell(), output.pid))
 
       # Some tests are expected to fail and don't produce coverage data.
       if os.path.exists(sancov_file):
         parts = sancov_file.split(".")
         new_sancov_file = ".".join(
             parts[:-2] + ["test", str(self.test.id)] + parts[-1:])
         assert not os.path.exists(new_sancov_file)
         os.rename(sancov_file, new_sancov_file)
@@ skipping 219 matching lines @@
     if self.context.verbose:
       print text
       sys.stdout.flush()
 
 
 class BreakNowException(Exception):
   def __init__(self, value):
     self.value = value
   def __str__(self):
     return repr(self.value)